The planning fallacy is the idea that when you try to make a plan, like if you're trying to figure out what you want to meajure, you don't understand anything about the careers that you're committing to. And this is a prime example of the planning fallacy, that when you make plans, you have the least amount of information,. Therefore, they end up being worst plans that you could, by definition, make. The best decision, the best way to figure outwhat you should major in college, is to go to college forty years, figure out what the right major is and tell your 18 year old self it'll work for you. But we can't do that.